Potential Transformer Specification

Potential transformer pt definition the potential transformer may be defined as an instrument transformer used for the transformation of voltage from a higher value to the lower value.

Potential transformer specification. The ecosystem is designed to drive data driven intelligence and decision making in the operations and maintenance of transformers and power grids. This transformer step down the voltage to a safe limit value which can be easily measured by the ordinary low voltage instrument like a voltmeter wattmeter and watt hour meters etc. 3156 part i iv. The purpose of the potential transformer is to provide an isolated secondary voltage that is in phase and exact proportionate representation of primary voltage.

Some definitions and requirements of these standards such as csa c88 m90 ieee c57 12 00 and iec 60076 are different. The specifications of a voltage transformer mean the parameters by which the equipment is specified. The capacitor voltage transformer cvt uses a capacitance potential divider and is used at higher voltages due to a lower cost than an electromagnetic pt. Potential transformers are used for both protection and metering purposes.

A potential transformer must be capable of operating at 110 above rating voltage continuously provided the secondary burden in volt amperes at this voltage does not exceed the thermal rating. The electromagnetic potential transformer is a wire wound transformer. It is a complete suite of products software services and solutions that work together and have the capability to integrate with new and existing digital equipment from other manufacturers. As with any device the voltage transformer must meet requirements relating to the voltage current and frequency.

Transformers are available in standard and customizable designs to meet utility commercial and industrial applications. Specification for voltage transformer. Many specifications list a number of transformer standards and make a statement in the specifications that the transformers must meet these standards. The voltage transformer must comply with the network specifications this is essential.

The specifications of a voltage transformer are as follows. An optical voltage transformer exploits the faraday effect rotating polarized light in optical materials. Potential or voltage transformer. The following have different explanations in these standards.

The emergency rating of potential transformers is defined at one minute of operation thus enough time for protective equipment to operate. Application guide for voltage transformers.